Making a DLL in VB.NET which I can use as DllImport

Question

Can I make a DLL in VB.NET which I can use in VB.NET with the tag DllImport just like we import functions from "user32.dll"?

Answer 1

No you can't.

The DllImport attribute is used to invoke native / un-managed functions from managed code - VB.Net is managed not native, and so you can't run VB.Net functions through DllImport / P/Invoke.

To use VB.Net functions in other VB.Net projects you should either add a reference to that assembly, use a common referenced interface or base class, or use Reflection.

Answer 2

The outcome of your project, so when you compile and for example debug it are libraries.

• 1: Go into Visual Studio
• 2: Create a new Project -> "Class Library"
• 3: Put some code into your classes
• 4: Build it
• 5: Search the Debug/Release folder for your DLL